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Finding the Fourth Proportional to 313,516.66, 432,785.09 and 211,679.91

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Solution

The fourth proportional to 313,516.66, 432,785.09 and 211,679.91 is: 292,207.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,516.66 : 432,785.09 = 211,679.91 : x
  2. Step 2: Convert to fraction form
    313,516.66/432,785.09 = 211,679.91/x
  3. Step 3: Cross multiply
    313,516.66x = 432,785.09 × 211,679.91
  4. Step 4: Simplify right side
    313,516.66x = 91,611,909,429.74
  5. Step 5: Solve for x
    x = 91,611,909,429.74/313,516.66
  6. Step 6: Final answer
    x = 292,207.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.